I have a site built on Gatsby JS (React) and whenever I forward a subdomain with masking the css for mobile breaks. My domain registrar is godaddy and forward without masking works
For example:
abc.mydomain.com -> mysite.netlify.com (No Masking) ->Responsive
abc.mydomain.com -> mysite.netlify.com (Masking) -> No responsiveness
Any help is appreciated!
